Seat and back rest for a chair



FIG. 1 is a perspective view showing the top, left side and front of a seat and back rest for a chair which forms my new design, the broken lines of other parts of the chair in this and other figures being for illustrative purposes only and forming no part of my design;

FIG. 2 is a perspective view showing the top, left side and rear thereof;

FIG. 3 is a front elevational view;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The short broken lines on the seat and back rest in FIGS. 1-8 are understood to represent stitching. 

The ornamental design for a seat and back rest for a chair, as shown and described. 